man 1955 thru 1977. value for a used gun in 70 percent is $350.
1970
1959
and the model is..................................
about 1875
After 1978.
No serial number provided.
1958
Proofhouse.com has sn tables you can look it up on.
Providing serial number information has been published, you look it up.
it ain't worth a monkeys left ball
No published sn data
By posting the serial number to your rifle in this question.